Chamber test

The climate of South Korea is that of high temperatures and high humidity in the summer season and low temperatures and low humidity in the winter. Humidifiers and dehumidifiers are used to create a cool indoor environment, and the demand for building materials with moisture adsorption/desorption functions is increasing. To investigate the performance of moisture adsorption/desorption new mineral fiber boards, a chamber test and mock-up test were performed and compared to mineral fiber boards.

In this paper, experiments and simulations for moisture buffering of the gypsum boards is described.The small chamber (4.62 m3) installed the gypsum board on the interior surface was used for theexperiments. This chamber was located in a climate chamber. The ambient condition of the smallchamber was controlled at constant temperature and humidity. In the experiment for the relationshipbetween moisture buffering and ventilation rate, three cases of ventilation rate, i.e. no ventilation, 1.01/h and 5.0 1/h, were investigated.

In this paper, the experiment for moisture buffering and effect of ventilation rate and volume rate of thehygrothermal materials is described. The objective of the experiment is to make clear the relationshipsbetween the moisture buffering effect and, the ventilation and volume rates of the hygrothermalmaterials. In the experiment, a layer of gypsum board as hygrothermal materials is placed on theinterior surface of the test chamber (4.60 m3). This chamber is located in the climate room which cancontrol constant temperature and humidity level (20oC and 50%rh).